Method for treating an organic liquid contaminated with an iodide compound
AssigneeUop LLC
InventorsSanti Kulprathipanja, Benjamin C. Spehlmann, Richard R. Willis, John D. Sherman, William A. Leet
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Abstract
A solution is provided to the long sought inorganic alternative to resin based adsorbents for iodide clean-up service for corrosive organic liquid. The solution involves the use of a solid inorganic adsorbent comprising a combination of a silica-rich zeolite molecular sieve, which has been cation-exchanged with an iodide-reactive metal selected from silver, mercury, copper, lead, thallium, palladium or mixtures thereof, with a substantially insoluble, porous refractory inorganic oxide binder. Reactivation and regeneration technique for the spent inorganic adsorbent are also covered.
Claims20
A method for treating an acidic organic feed liquid contaminated with detrimental amounts of one or more iodide compounds comprising contacting the acidic organic feed stream in an adsorption zone with a solid inorganic adsorbent comprising a combination of a silica-rich zeolitic molecular sieve, which has been cation-exchanged with silver, mercury, copper, lead, thallium, palladium or mixtures thereof, with a substantially insoluble, porous refractory inorganic oxide binder at adsorption conditions effective to adsorb iodide compounds and to maintain liquid-phase thereby producing a substantially iodide compound-free treated acidic organic liquid.
Dependencies are inferred from the claim text.